Here's what we did. (Thanks to the BBB we had all the supplies, but I bet you could scrounge these up in your own house pretty easily.)

Gather your supplies:

Piece of paper

Green marker or crayon

3 or 4 cupcake liners

Assorted other crayons/markers depending on how much you trust your child (Little Miss and I had an "incident" recently with a marker which has since made me default to crayons unless I'm hovering over her while she draws and colors)

Glue

Depending on the age of your child, you may have to do this part for them so they have somewhere to start. Little Miss is going to be 3 next week (I know, WHA?!), so she still needs a bit of help.

1) Draw (or have them draw) something similar to this:

Try not to laugh too hard at my ATROCIOUS drawing skills. BBB had done this part for me already, but since I didn't take a pic of it ahead of time I whipped up something similar for you (purely for illustrative purposes as I'm sure no one needs a template of this!)